Electromagnetic and microwave-absorbing properties of magnetic nickel ferrite nanocrystals

Nanoscale ◽  
2011 ◽  
Vol 3 (7) ◽  
pp. 2862 ◽  
Author(s):  
Weimo Zhu ◽  
Lei Wang ◽  
Rui Zhao ◽  
Jiawen Ren ◽  
Guanzhong Lu ◽  
...  
Keyword(s):  
Nickel Ferrite ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing

Synthesis of magnetic nickel ferrite microspheres and their microwave absorbing properties

2016 ◽  
Vol 32 (4) ◽  
pp. 678-681 ◽  
Author(s):  
Qingze Jiao ◽  
Yanfeng Wang ◽  
Liang Hao ◽  
Hansheng Li ◽  
Yun Zhao
Keyword(s):  
Nickel Ferrite ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing

scholarly journals Characterization, Production and Microwave Absorbing Properties of Polyaniline-NiFe2O4: Tb Composites

2019 ◽  
Vol 25 (3) ◽  
pp. 322-327
Author(s):  
Ethem İlhan ŞAHIN ◽  
Selcuk PAKER ◽  
Mesut KARTAL
Keyword(s):  
Structural Analysis ◽  
Nickel Ferrite ◽  
Single Phase ◽  
Second Phase ◽  
Network Analyzer ◽  
Vibrating Sample Magnetometer ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing

In this study, terbium-doped NiFe2O4 was produced by using mixed oxide technique. The Ni1-xTbxFe2O4 composition was synthesized and x was selected as 0.025, 0.050 and 0.070, respectively. The single phase Ni ferrite was produced after sintering at 1250 °C for 4 h. X-ray diffraction (XRD), scanning Electron Microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) were performed for the structural analysis. The results of the structural analysis indicated that second phase did not form in Ni1-xTbxFe2O4. Additionally, the polyaniline-terbium doped NiFe2O4 composites were produced by hot pressing using the compositions of Ni0.975Tb0.025Fe2O4.018, Ni0.950Tb0.050Fe2O4.037, Ni0.93Tb0.070Fe2O4.0525 and aniline. The weight ratios of terbium-doped nickel ferrite and aniline were 1:1 and 1:3 respectively and epoxy resin was used to produce microwave absorbing composites. The magnetic properties of fabricated composites were investigated using a vibrating sample magnetometer (VSM). The microwave absorbing performances of Polyaniline-NiFe2O4: Terbium composites were investigated by reflectivity in 0 – 8 GHz using two–port vector network analyzer. A minimum of – 39.41 dB reflection performance was obtained in 7.9 GHz at the thickness of 2.0 mm. This reflection performance can be modulated simply by controlling the content of polyaniline in the samples for the required frequency bands. DOI: http://dx.doi.org/10.5755/j01.ms.25.3.20810

Microwave Absorbing Properties of Polyaniline-NiFe2O4: V composites

2019 ◽  
Vol 41 (2) ◽  
pp. 246-246
Author(s):  
Ethem Ilhan SAHIN and Selcuk PAKER Mesut KARTAL Ethem Ilhan SAHIN and Selcuk PAKER Mesut KARTAL
Keyword(s):  
Structural Analysis ◽  
Nickel Ferrite ◽  
Single Phase ◽  
Second Phase ◽  
Network Analyzer ◽  
Vibrating Sample Magnetometer ◽  
X Ray Diffraction ◽  
X Ray ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing

In this study, vanadium doped NiFe2O4 was produced by using mixed oxide technique. The NiFe2-xVxO4 composition was synthesized and x was selected as 0.1, 0.2 and 0.3, respectively. The single-phase Ni ferrite was produced after sintering at 1100and#176;C for 4h. X-Ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) were performed for structural analysis. The results of the structural analysis indicated that the second phase did not form in NiFe2-xVxO4. Additionally, the polyaniline-vanadium doped NiFe2O4 composites were produced by hot pressing using the compositions of NiFe1.9V0.1O4.1, NiFe1.8V0.2O4.2, NiFe1.7V0.3O4.3, and aniline. The weight ratios of vanadium-doped nickel ferrite and aniline were 1:1 and 1:3, respectively. Epoxy resin was used to produce microwave-absorbing composites. The fabricated composites were characterized by using Fourier transform infrared spectroscopy (FTIR). Furthermore, the magnetic properties of the fabricated composites were investigated by using a vibrating sample magnetometer (VSM). The microwave absorbing performances of the polyaniline-NiFe2O4: V composites were investigated by reflectivity in 0–8 GHz, using a two–port vector network analyzer. A minimum of -42.17 dB reflection performance was obtained in 7.02 GHz at the thickness of 2.0 mm. This reflection performance can be modulated simply by controlling the content of polyaniline in the samples for the required frequency bands.

Microwave Absorbing Properties of Carbon Fibers Modified with BN/SiC Composite Coatings

2014 ◽  
Vol 29 (10) ◽  
pp. 1093 ◽  
Author(s):  
ZHOU Wei ◽  
XIAO Peng ◽  
LI Yang ◽  
LUO Heng ◽  
HONG Wen
Keyword(s):  
Carbon Fibers ◽  
Composite Coatings ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing

Synthesis and Microwave Absorbing Properties of PyC/BN Composite Powders

2013 ◽  
Vol 28 (5) ◽  
pp. 479-484 ◽  
Author(s):  
Wei ZHOU ◽  
Peng XIAO ◽  
Yang LI ◽  
Heng LUO ◽  
Liang ZHOU
Keyword(s):  
Composite Powders ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing

Investigation of the microwave absorbing properties on polymer sheets

2021 ◽  
Author(s):  
Monika Mishra ◽  
Avanish Pratap Singh ◽  
Manish Kumar ◽  
Tejendra Kumar Gupta ◽  
Hema Bhandari ◽  
...  
Keyword(s):  
Microwave Absorbing Properties ◽  
Polymer Sheets ◽  
Microwave Absorbing
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